Vehicle: 2011 Ford E 350, V8-5.4L,
Problem: This vehicle was towed into the
shop because the engine would crank over but not start. There
were no diagnostic trouble codes.
Details: On the initial call, the
technician related that he had already applied battery power to
the fuel pump and it ran. He also noted that there appeared to be
a voltage drop in the wires between the fuel pump and the fuel
The Tech-Assist consultant suggested load testing the power and
ground circuits. While load testing the ground circuit to fuel
pump, the technician noted that the voltage was dropping out. He
also checked the ground circuit to fuel pump module. It was also
Together the two set out to identify the exact locations of all
the fuel-pump related circuit grounds in ALLDATA Repair. Armed
with that information, the technician traced the ground circuits
and found a broken chassis ground strap (under passenger seat).
Confirmed Repair: The technician replaced
ground strap and the fuel pump operated normally. The engine
started and ran perfect. Fixed!